1. W. W. Breckner, Stetigkeitsaussagen fiir eine Klasse verallgemeinerter convexer funktionen in topologischen linearen Raumen, Pupl. Inst. Math., 23 (1978), 13–20.
2. S. S. Dragomir, J. Pecarič, L. E. Persson, Some inequalities of Hadamard type, Soochow J. Math., 21 (1995), 335–341.
3. E. K. Godunova, V. I. Levin, Neravenstva dlja funkcii sirokogo klassa, soderzascego vypuklye, monotonnye i nekotorye drugie vidy funkii, Vycislitel. Mat. Fiz. Mezvuzov. Sb. Nauc. Trudov, 1985,138–142.
4. S. Varošanec, On $h$-convexity, J. Math. Anal. Appl., 326 (2007), 303–311. https://doi.org/10.1016/j.jmaa.2006.02.086
5. S. Wu, M. U. Awan, M. A. Noor, K. I. Noor, S. Iftikhar, On a new class of convex functions and integral inequalities, J. Inequal. Appl., 2019 (2019), 131. https://doi.org/10.1186/s13660-019-2074-y